Manufacturing method of a heat sink

Abstract

A manufacturing method of a heat sink is disclosed. A board having a first width is transported to a machine tool. The board is punched to form multiple sheet bodies. A bent part is formed on a terminal end of each sheet body having a second width. A first combined part protrudes from the bent part. A second combined part is hollowly disposed on the edge of the bent part as an indentation corresponding to the first combined part. The bent part is bent to stand correspondingly to each of the sheet bodies. Each sheet body is cut to form multiple heat dissipation fins. The second width is equal to the first width. When the heat dissipation fins overlap with each other, the first combined part of one heat dissipation fin is connected to the second combined part of another dissipation fin.

1 . A manufacturing method of a heat sink, wherein the method comprises steps of:
 transporting a board to a machine tool, wherein the board has a first width;   punching the board to form a plurality of sheet bodies, wherein a bent part is formed on a terminal end of each of the sheet bodies, each of the sheet bodies has a second width, a first combined part protrudes from the bent part, and a second combined part is hollowly disposed on the edge of the bent part as an indentation corresponding to the first combined part;   bending the bent part to stand correspondingly to each of the sheet bodies; and   cutting each of the sheet bodies to form a plurality of heat dissipation fins;   wherein the second width of each sheet body is equal to the first width of the board, when the heat dissipation fins overlap with each other, the first combined part of one heat dissipation fin is connected adjacently to the second combined part of another dissipation fin, and an interval between each two heat dissipation fins is determined by a distance between a first side of the first combined part and a second side of the second combined part.   
     
     
         2 . The manufacturing method as claimed in  claim 1 , wherein the machine tool is a punching machine, or a material of the heat sink comprises copper, aluminum, iron, magnesium or alloys thereof. 
     
     
         3 . The manufacturing method as claimed in  claim 1 , further comprising forming a plurality of breaches when punching the board, and a suitable distance between the breaches is determined. 
     
     
         4 . The manufacturing method as claimed in  claim 3 , wherein the breaches are V-shaped, semi-elliptic shaped, concave-shaped, U-shaped, semicircle-shaped or trapezoid. 
     
     
         5 . The manufacturing method as claimed in  claim 3 , further comprising bending the bent part along troughs of any two breaches disposed horizontally and correspondingly to form a bent line, or bending the bent part along troughs of any two breaches disposed vertically and correspondingly to form a cutting line. 
     
     
         6 . The manufacturing method as claimed in  claim 1 , wherein when the two heat dissipation fins are combined, the first combined part of one heat dissipation fin is combined with the second combined part of another heat dissipation fin via laser spot welding, gluing, adhering, or buckling. 
     
     
         7 . The manufacturing method as claimed in  claim 1 , wherein the interval between the two heat dissipation fins are a distance between the first side and the second side, and the tolerance is 0.1 millimeter. 
     
     
         8 . The manufacturing method as claimed in  claim 5 , wherein the transporting direction of the machine tool is parallel to the bent line. 
     
     
         9 . A manufacturing method of a heat sink, wherein the method comprises steps of:
 transporting a board to a machine tool, wherein the board has a first width;   punching the board to form a plurality of sheet bodies, wherein a bent part is formed on a terminal end of each of the sheet bodies, each of the sheet bodies has a second width, a first combined part protrudes from the bent part;   bending the bent part to stand correspondingly to each of the sheet bodies; and   cutting each of the sheet bodies to form a plurality of heat dissipation fins;   wherein the second width of each sheet body is equal to the first width of the board, when the heat dissipation fins overlap with each other, the first combined part of one heat dissipation fin is adjacently stacked up with the bent part of another heat dissipation fin, and an interval between each two heat dissipation fins is determined by a distance between a third side on the overlap with of heat dissipation fins and a first side of the first combined part.   
     
     
         10 . The manufacturing method as claimed in  claim 9 , wherein the machine tool is a punching machine, or a material of the heat sink comprises copper, aluminum, iron, magnesium or alloys thereof. 
     
     
         11 . The manufacturing method as claimed in  claim 9 , further comprising forming a plurality of breaches when punching the board, and a suitable distance between the breaches is determined. 
     
     
         12 . The manufacturing method as claimed in  claim 11 , wherein the breaches are V-shaped, semi-elliptic-shaped, concave-shaped, U-shaped, semicircle-shaped or trapezoid. 
     
     
         13 . The manufacturing method as claimed in  claim 11 , further comprising bending the bent part along troughs of any two breaches disposed horizontally and correspondingly to form a bent line. 
     
     
         14 . The manufacturing method as claimed in  claim 11 , further comprising bending the bent part along troughs of any two breaches disposed vertically and correspondingly to form a cutting line. 
     
     
         15 . The manufacturing method as claimed in  claim 13 , wherein the transporting direction of the machine tool is parallel to the bent line. 
     
     
         16 . The manufacturing method as claimed in  claim 14 , wherein the bent line is perpendicular to the cutting line.